Winding device for timepieces



April 2, 1929.

l. DITESH EIM WINDING DEVICE FOR TIMEPIECES lFiled De. 5, 1927 Painted is.' 2, 1929. l l i l g a 4UNITED stares Partnr .ot-sien* ISIDORE`D1TESHE1M, OF lLAA CHAUXDE-FGNDS, SW'TZEBJLAND, ASSlGNOR T0 FA- BRIQUES 1\IOVADO,OF LACHAUX-DEeFGNID SWITZERLAND.

Winniivsnnvicn non frnvinrinons.`

Application led December 3, 1927, Serial No. 237,534, and in Switzerland September 6, 1927.

This invention relates to a time piece, for rlhe rectangular watch shown comprises a example a necklace watch, an alarm` clock movement 1 which is mounted in a case havor any other portable or stationary instruing a supporter frame 2, a back or end 3, ment, 'comprising a clock work whose main and a bezel elcarrying the crystal 5. l.The end spring is wound by means of a winding stem 3 and the bezel e are attached asusual to the 60 adapted to rotate on itself and the action of support 2, each by a notch adjustment. The which is effective only when the stem is rodial is designated by 6. i, tated in one direction, While having no The winding stem 7 passes through the effect if rotated in the -opposite direction. vframe 2 and controls the winding and trac- Theinvention is particularly applicable to tion operated setting` mechanism, which are 65 wrist watches and other time pieces of small ot' usual construction. 1t is surmounted by dimensions where Vthe winding` and ysetting the winding head 8 and comprises a pinion operations are ditlicult by reason of the small 9 placed directly below the head 8. The dimensions of the windinghead mounted on windin stem acts on the winding mechanism l5 the winding stem, and which is diliicult to only when rotated in one direction; in the 70 grasp, particularly by a gloved hand. other direction the action of stein 7 has no Endeavor has been made in the past'to effect.V It is different when traction is eX- eliminate this defect' in round watches by ei'ted on stem 7 drawing it out and bringing means of aiotating and toothed .bezel col-A itinto position for setting the hands, in which lar which engages in a pinion of the Winding Yposition stem 7 acts on the set-ting mechanism 75 stein, but this method cannotbe used pracwhen rotated in both directions. Engaging tically in watches of rectangular, oval or in pinion 9 are tivo racks 10, 11 arranged tanother form differing from the round form. gen'tially to the pinion and on either side ln the time piece forming the subject of thereof. YEach rack isslidably retained lin thepresent invention the problem has been grooves 12 and 13 of the frame and each 80 solved by means comprising at least one racks attached to a slide 14 and 15, bymeans rack intended to enoage in a toothed portion. of transverse rods 16 and y17. The slides'1t or denture of the winding stem and commuand 15 are of inverted channel section and nicate to: this latter a` movement of rotation have their free ends formed with flanges about its own axis, said rack being conslidablyretained in grooves 18, 19 of the 85 trolled by a reciprocating clement `of the frame 2. The rods 16 and 17 intersect the case containing the clock. worin in such space within the channelled slides`r being anmanner that the rack becomes disengaged chored in the opposite sides thereof, The from the denture of the winding stem toslides 14 and 15 are arranged at either side ward the end of its stroke, while the control of head 8 symmetrically with respect to the 90' member moves in a direction of its reciprocan winding stem, so that they may be brought 'tory movement. These specic characteris closer to or separated from each other, as tics of the'invention may be realized by dif-V shown on Figures 1 and 2, and. being ferent forms of construction according to the hollow like a trough and exactly similar,

4o desire of the makerand thek type and form of they constitute elements of the case of .95 the time piece.r which they form one of the sides when their A rectangular watch having two racks to inner ends are in abutment (Figure 1). The control or drive the winding stem is shown outer ends of the 'slides are formed as a on the accompanying drawing by way of eX- knob 21 by means of which the slides may ample. y easily be grasped and actuated manually. 100

Figure 1 is a front elevation showing the 1When the slides are united .they entirely covparts in normal state. er the winding head 8, which is thus hidden FigureQ is a similar but partial view showwithin the casing. The joint 22 separating ing the-racks in position during operation. the two slides being scarcely visible, these Figure 3 is Yan, enlarged section on line latter appear to be an integral part of the 105 III-HI of Figurel. Y case.y and in order to strengthen this illu- Figure 4 is an enlarged section on line sion the case is formed on the side opposite IV-IV of Figure 3. f the winding head with sham slides, 14',

Figure 5is an enlarged section on line V-V 15 so that the two sides thereof have a 'simof Figure 3. ilar appearance'. 110

When the slides 1st, 15 are separated itrrin each other, as shown on Figure 2, the racks 10 and 11 move in opposite directions, relatively, and communicate rotary movement to pinion 9 and to the Winding stem. llt is the same when the slides are pushed toward each other, so that it is possible to wind the main spring oit' the watch by communieating@ repeated reeiproeatory movements to slides 14 and 15 in both directions. However, the extent of separation ot the slides and ot the racks 10, 1l is limited by stops 23 and against which the transverse rods 1G and 1'?, which pass through perfor-atei lugs oi the racks, strike.

The stops A3, 24 preventthe slides trom coming out of their respective guide grooves 18, 19 and thus becoming loosened 'from the Watch. They are mounted so that` the winding` head Willebe entirely uncovered when the transverse rods 1G, 17 strike against blocks 23, 24; which permits o grasping the *winding head drawing,` it slightly outwardly and setting` the Watch. y

This operation is made possible by the tact that the dentures o'l' racks 10 and 11 disengage from pinion 9 when the slides approach stops 23, 2st; the racks again engage the pinion as soon as lthey begin their return stroke.

It is apparent that the invention is applicable not only to rectangular watches as shown, but also to watches or eloelts et round7 oval or any other 'torni differing,Y from the rectangular itorm.

The Construction of these modilieations presents no difficulty for one skilled in the art, since the constructive problem consists simply in adaptingl the lorm and movement of the rack or racks (ill there are two) to the 'forni ot the time piece. Thus, the rack may have a curved `term or may be a pivoted toothed sector and mounted on a round or curved time piece, sach ease the rack may be controlled by means ot' a bolt or pin mounted on the s pport or bark of the ease.

Wlliat l desire to secure by Letters Patent is:-

1. A time piece comprising a movement and Winding stein, and a easiiigf within which sai-:l mo\'eme"t is mounted., an operating` head on said idingsteun a p non on said stein below said head, eppositely reeiproeable raelis adapted to engage saidA pinion ttor rotatinggj said stein alternately in opposite direeitons7 complementary Channelledr slides slidably retained by said easing', and housing said operating; head within the channels thereof, `when positioned in normal abntn'ient7 said slides beine operatively eonnected to said racks, means limitine the range et movement ot said slides in a direction away 'troni one another said slides and racks being` so eorre ated that said racks are diseiiggaged from said pinion when said slides are in their outermost position.

2. A time piece inrluding;- a movement and Winding' stein and a reetantejular easing' within which said movement niounteth the side of said easing adjacent the windinfrg` stein being provided with eoinirileinentary reetilinearly reeiproeable slides, symmetrical with respeet to said Winding' stein and lions ing); the latter when in abutment, means 'tor rotating said stein, said slides beine' operatively connected with said rotating; means,

ln 'testimony vv'hereoit have signed my naine to this speeil'ieation. 

